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- เผยแพร่เมื่อ 1 เม.ย. 2012
- Here's a VR-6 flywheel that was brought into Costa Mesa R&D Automotive Machine for some lightening. It wound up having nearly 5 pounds of material removed in the process. (949) 631-6376 Don't forget to 'Click' and SUBSCRIBE.
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Manual machines, rotary tables and HSS cutting tools...I wish I could make a living that way :)
Great work as always.
I just wish this equipment wasn't so expensive, even dubious quality new chinese stuff is expensive.
Nice job on the flywheel...in the other video , cutting the Sealed Power piston...I use a Franklin Piston Vise set to "0"... works really well for fly cutting valve pockets as well as removing material off the top.... and a plus is, that it's square with the wrist pin !!!! Great work !!!
My son had the flywheel lightened in his Ford Ranger, would up having to replace it with one form a salvage yard. The truck would stall every time he tried to start off from a red light.
He would not listen to his "old" dad.
I guess you would have to look up the meaning of a flywheel to understand what it's purpose is.
I agree with you, why would you shave a Ford Ranger's Flywheel?
I feel like he heard "performance engines have light flywheels" not realising exactly what that means at all...
For anyone wondering, a flywheels job is store energy that the engine produces. It allows the engine to provide power under load without having to increase its speed too much. Heavy flywheels have an initial high energy cost to get spinning really quick, but once they are the energy they store is huge. If you lighten the flywheel you massively decrease the amount of work the engine has to do to change* its speed, but this in turn means that the engine does not store enough kinetic energy to move things unless it is operating at higher RPM's.
Super useful in F1 etc... but in something that moves heavy weight and needs to do so at very low rpm's? It is a miss step to do that.
*In a usual persons driving experience, the lighter the flywheel/less energy it has... the faster the rpm needle will ascend and descend when the throttle is pressed/depressed.
When you engage the clutch against the flywheel, it takes some of that energy from the flywheel and the engine to move the wheels, which is why rpm drops. In a car with a lighter flywheel, the engine will decrease speed rapidly with introduction of this new load. Hence why this guys sons truck can no longer move off the line and stalls.
Would you be able to do a video on how you balance it?
Miss ol' John.
it is normally used in racing and performance cars. it is desireable that all movable parts in the engine (piston, crankshaft, flywheel, even pulleys) are lightweight because they spin up faster. you wouldn't typically do that on a daily driver, instead you just face the flywheel slightly to get it flat again
Lightening the flywheel has some trade offs. You engine will decelerate faster on closed throttle. This often comes with a drop in gas mileage and a higher likeliness to stall, especially if you're not using a tuner which can compensate by turning the injectors back on sooner or some other "catch" parameter that prevents this stalling. Higher moment of inertia (heavier) flywheels also typically smooth out acceleration better.
I know John already replied but if you have a goal weight in mind you can pretty accurately estimate the amount to remove by modeling the features in a 3D cad program like solidworks. Just put in the flywheel material (or one of similar density) and it'll estimate a weight. This allows you to quickly figure out how and where to machine to get it down to the weight you want.
It's a great work ,I never see like this.
LOL 17.5lbs stock, i'm just under that with an after market flywheel (13.4 aluminum) for my F150 and I thought that was good. My stock flywheel is 27.8lbs, I do wish I'd had the means to lighten my steel wheel like this instead of buying an aftermarket one but this is life right now.
Both, but mostly for better grip.
Did you re cut the opposite side to make it parallel with the cut side and did you get any warpage from stress relieve during the cut. Don't know much about cast but steel will stress relieve when machined.
Is the paper to prevent scratching or is it shimming you up a few thou?
How do you determine a safe amount of material to remove?
cool to watch!
Sorry you feel that way, but I would llike to see your video of how you do this. So what if the flywheel is produced overseas, if it meets specs and works as designed, what the problem?
You can usually remove 20% to 30% of the flywheels weight, any more then that and you have to use your experience and knowledge.
Probably if its not a dual-mass unit.
This is so much fun to watch.
How do you balance after it’s done I done a fly wheel on my lathe for a race engine it’s got no vibration maybe I was lucky but would feel better if it was balanced I was going to make a bearing shaft to try balancing like a motorcycle wheel cut bits away with a die grinder till balanced or leave as it is not broken don’t fix 😂
Just give him a call he is great to deal with, he is just your typical happy old man.
what about balancing? I would also assume that the flywheels are that thick for a reason and engineered that way for durability, is there a risk of the flywheel blowing apart now?
+Dick Fageroni very rough idle. I use a 9.8 lbs flywheel, by the time the flywheel and pressure plate weight is combined, I'd say is 17 lbs extreme max idles like shit. takes off like a bat out of hell.
Why did you use both conventional and climb cutting? No coolant is that because it was it was cast iron?
All the graphite within the cast iron provides all the lubrication necessary.
Nice!
What was the reason for removing weight? If it was going to be used for racing I would think the kinetic energy would be of value.
A lighter flywheel will make your engine respond to the throttle pedal quicker. But beware your idle will be rough and lumpy, not a problem on a race car as you don't spend much time there anyway. You can turn it up to 12 or 1,500 rpm by adjusting the carb or ECU but you wont be popular with your neighbours as I assume you will have other performance parts including a loud exhaust.
Why did you use an endmill over a fly cutter? Thanks for all the videos! Take care, be safe!
More centralized tool forces, more cutting edges so you can feed faster, much higher depth of cut capabilities (although cutting width is generally lower) and it's better on the mill spindle when taking deep cuts.
shouldn't it say made in germany?
good one
How off balance are they fresh out of the mill? Do they need to be rebalanced?
Re ground and balanced after
Is that aluminum or iron flywheel?
Pros and cons?
That is iron I believe
i wish i could do this to my flywheel.
do you balance the flywheel after removing the material?
+jake white he said it right in the beginning while centering the flywheel
+jake white he said it right in the beginning while centering the flywheel
Is it balanced though?
JobeMinacum same thing I was wondering
0:50
I wonder when it is advantageous to remove flyweel weight why dont they already lighten them in factory builds? They would save material and thus money but they still dont do it. Why?
Removing rotating mass in any race engine is desirable as the engine will be more responsive but will vibrate more and require a much higher idle speed. The flywheel mass is worked out at the factory to be a compromise between smooth idle and performance. Formula 1 engines have no flywheel at all if you discount the clutch (which is about the size of your fist) they mostly have ten cylinder engines but still have to idle at about 2,000 rpm. So if you want a smooth idle and to pull away at low revs then stick to a factory flywheel.
pretty close works just fine, No need for the curse.
I'm with you fiatnutz because its from China doesn't mean it bad . The factory ones are made in Mexico if I remember right. And if it was a usa made piece the guys bitching about the made in China would bitch about the cost . Anyways nice work . Have you done a stock one yet? also how much would you charge to do this and resurface my factory one?
I didn't know Bridgeport made lathes
ronald davis they made grinders also. Not many of them but I have a surface grinder from the 60's.
CAN YOU LIGHTEN A 04 ACURA TL 3.2 6SPD FLYWHEEL?
I have one, spin up and traction is fucking awesome!
Call me...
Some of its pretty good, some is not. You have to measure everthing.
next time use a sawsall
faster revs, get into power range quicker and move less rotational mass easier.
but more likely to stall especially if you have a high rpm cam installed.
@@prawny12009 depends on the clutch setup. But yes. Tends to be difficult to start from a stand still. Not typical for daily driven street cars to have all of these done.
@@operatesmoothly would you say that it would enhance a lumpy cam engine? I have a weekend driver Z28 with a 381 stroker that I'm trying to maximize the lumpy idle. I think I have a 30 pounder!
I also want it to rev up faster (it already does), and rev down faster (it does not really).
Any suggestions?
scratching
Also kills your fuel economy and makes driving it harder as you lose weight, its really not worth it on a daily driver....
j4cko56 this is for a performance application. I seriouslt doubt they care to much about fuel economy
i was sad when he dusted all he shaving off :( 6:57
hate to say it, but 90% of disk rotors and flywheels are made in china these days, even "German parts" but that said Chinese parts are getting better all the time.
Made in china??!?!
holy shit its made in china, i would never use that
made in china ?!?! WTF?
Petar, ask the Germans. Hope all is well in Croatia. Making progress on the SOHC 850 fico engine.
I would NEVER use a cast iron flywheel again, let alone one from china. I had a cast wheel exploded in my 427 chevelle, wrecked everything from the block and crank to ignition and tranny. Only reason i survived was the scattersheild.
0.56 sec. VR6 flywheel MADE IN CHINA!!!! Wtf
climb cutting? on a manual mill, HOW DARE YOU!?!
I love the nonsense comment in the video about anodizing. It is sad how people are so ill informed.
Made In China ! WTF ??? V W quality sure has gone down ...
made in China
MADE IN CHINA
Made in China...catch that?
MADE IN CHINA! :(
Vr6 sucks